Replace Kohler Toilet Gasket/Seal and Stop That Leak! (Five Minute Fix)

Got a Kohler toilet that won't stop running, that flushes intermittently, or that leaks (slowly or quickly)? Chances are good that five minutes and a $7 replacement gasket will take of the problem for you. It's easy and doesn't require tools.

This fix is for toilets like the Kohler Wellworth series.

Lots of you suggested removing the rock. It was there when we bought the house and didn't seem to cause any problems, but I've removed it just to be safe. Thanks for sharing your reasoning, folks!

[janithsallee]

Just completed gasket repair of my Koehler toilet with your directions. I am a female 82 years old and if I can do this anyone can. Thank you! The last time I had a plumber do this it cost me $95.00. My cost was $9.00 for three gaskets.

[TSKseattle]

I had a hardware store counter guy warn me to NOT twist the disc at the top, but to reach down under and twist the base. He says he has several people a month come in with the disc broken off. I did this seal replacement to day and took his advice, worked fine. In this video your hear the creak as he twists it, that's the bound up base that can cause it to break.
The seal was a 2-pak for $10

[juvieguy]

I followed your video, perhaps the most complete and clear instruction video for this, and replaced my badly worn gasket in about five minutes. I was ready to call a plumber before your video. Thanks for saving me a lot of money on a very easy repair!

[lindamcfeely]

after nearly 6 mos of having the part and my husband not taking the hint, you saved me from calling a Plumber. Easy Peasy to repair. Thanks for the video

[jen]

First time I've fixed something on my own without having to hire a professional. Thanks so much!!!!

[lindaarmand]

Your video was really helpful! We had a toilet that started running late this afternoon. After watching your video, we flipped the canister over and pulled off the gasket that was original to the toilet which was right at a year old. It was a red one, and it had little pimple like bumps on its top and bottom. Don’t know if this is the design or a defect. Anyway, my husband took it to Lowes and bought the $8 replacement and put it on. It worked like a charm. So far the toilet is not running and there is no leakage. You came to the rescue on a Sunday evening. Thank you sir!

[SKYGUY]

We bought our house 10 years ago and installed the new Kohler elongated toilet w/ the canister flapper. It lasted about 9 years and 10 months. Bought the seal yesterday and thought I'd check youtube for surprises. That's much easier than replacing the old flapper style. Thanks.

[GoldenFosterMom]

Thank you for posting this! $8 and a 10 minute fix. You saved me $100 minimum plumber call!

[kellyfitzpatrick]

Thanks! I figured out this was leaking and thought I had to replace the whole valve -- and was wondering where to get a 4" open end wrench to remove it. YouTube to the rescue (again) all I needed was a seal.

[donnaroom]

Thank you Hollis, you are my hero! Worked as you said it would. Appreciate your adding the fact that it's important to wipe around the seal seat in the tank (debris from the old rotted seal was caked on it) --- no one else on youtube, even from Kohler!, suggested to do that and it is so important.

[spencerbishop]

Very helpful, thank you! We had two leaks like this in our house simultaneously (Kohler toilets installed at the same time) and I thought it would take me hours to remove tanks and replace everything when I knew it was just the gasket, but I didn't know who even produced the parts I was looking at (I didn't install the toilets). 5 min video and 15 minutes to replace both gaskets is probably the easiest fix of anything I've ever dealt with!

[DeckofReason]

I have never seen this canister SYSTEM BEFORE...I HAD NO CLUE WHEN MY FATHER IN LAW WANTED ME TO STOP LEAKING CANISTER SIMPLE INSTRUCTIONS MADE IT A 5 MINUTE JOB AND SAVED HIM A LOT OF MONE Y...….THANK YOU VERY MUCH....RLS …..

[shabnamsultana]

I didn’t think I would find a video on changing the seal, but this is great! 👍🏻

[todddahl]

Yay! No more constantly running toilet!!! And it only cost me about 8 bucks and 10 minutes of my time. Thank you!

[kev]

Grab from the bottom when twisting the quarter turn if it's too tight from the top. Great Vid!

[loulouncmtn]

I bought 2 kohler toilets at the same time...they both started doing this exactly 3 years later! 🤨 thanks for the video that’s why I came here! 🙏🏻

[robertwilliams]

I just changed the gasket myself and I know I had to have saved a ton of money. I wasn't familiar with this type of toilet since everywhere I have lived had older toilets but this is so simple and easy.

[stevedietrich]

Excellent video with step by step instructions, as well as the part number you need. Easy fix and good job. Once I had the gasket out of the package it took about 3 minutes to remove the old gasket, place the new one, and reassemble everything.

[Sojourner_PNW]

I've been putting this off for months. Your video helped and showed me how to replace the gasket. Thanks so much.

[georgewalsh]

I was able to fix my toilet because of the help I got from this video. Thank you.